was also executed but it did nt recognized these commands....nd aborted....
what should i do...?
When i run my mpiblast program for the frst time then it give mpi_abort error...bailing out of signal -1 on rank 2 processor...then i removed my public ethernet cable....and then give btl_tcp endpint error 113....

I'm not sure if there is a question in there somewhere, but basically, I'd expect rather much knowledge about unix in general and HPC in particular to be required to set up and run a cluster with MPI programs.

It's certainly not impossible with no background knowledge, but I think it's very easy to underestimate the amount of learning (reading/experimenting) necessary.

As you seem to have established already, 113 means "no route to host".